Attributes / relations provided by
♦ ¹del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona.
♦ ²William Goulding and Thomas E. Martin (2010) Breeding Biology of the Golden-Faced Tyrannulet (Zimmerius chrysops) in Venezuela The Wilson Journal of Ornithology 122:4, 689-698